Paper-feeding apparatus for printing presses, folding machines, and the like



G. W KOENIG PAPER FEEDING APPARA'IQUS FOR PRINTING PRESSES,

5 Sheets-Sheet 1 FOLDING MACHINES, AND THE LIKE Filed April 18, 1925 M. G. W KOENIG PAPERI'EBDING APPARATUS FOR PRINTING PRESSES, FOLDING MACHINES, AND THE LIKE 6, Filed April 18. 1925 s Sh eets-Shoet 2 Alfarnny.

Oct. 6, M. G. W KOENIG v PAPER FEEDING APPARATUS FOR PRINTING PRESSES, FOLDING MACHINES, AND THE LIKE Filed Apri 1 18, 1925 5 Sheets-Sheet 4.

A [22 van for:

' j 5 A Allorney.

Oct- 6, I

M. G. W KOENIG BAP!!! FEEDING APPARATUS FOR PRINTING PRESSES,

FOLDING MACHINES, AND THE LIKE Filed Apiil 18, 1925 5 Sheets-Shoot 5 Q o o 95 93 {I 96 o 2 11. g fmwafk WWW Allornnu.

Patented Oct. 6, 1925.

UNITED STATES 1,556,116 PATENT OFFICE.

MAX GU'NTHEB WILHELM KOENIG, OF BERLIN-GRUNEWALD, GERMANY, ASSIGNOR TO MASCHINENFABRIK KOENIG-WERK G. M. B. H., OF BERLIN-GRUNEWALD, GER- MANY, A JOINT STUCK-COMPANY.

PAPER-FEEDING ArrAaA'ru's roa PRINTING zennssns, ronnmo MACHINES, AND

THE LIKE. I

Application filed April 18, 1925. Serial 1T0. 24,152.

To all whom it may concern:

Be it known that I, MAX GiiN'rHER WIL- HELM KoENIG, a. citizen of Germany, residing at Berlin-Grunewald, in the State of 5 Prussia, Germany, have invented certain new and useful Improvements in Paper-Feeding Apparatus for Printing Presses, Folding Machines, and the like; and I do hereby declare the following to be a full, clear, and 19 exact description of the invention, such as will enable others skilled in the art to which it a pertains to make and use the same.

y invention relates to improvements in paper feeding apparatus for printing presses, folding machines and the like, and more particularly in apparatus of the type'shown for example in the patent of the United States Nr. 538,640, granted April 30, 1895,--

to Briggs and Philpott, in which a pile or '20 bank of paper placed on an upper supply table is passed around a reversing member such as a drum and on a lower feed table so as to be reversed in position, the sheets 10- catedwhile on the upper or supply table at 2 the top of the pile orb-ank beingat the botso that the power for advancing the pile of paper is larger during the feeding stroke than during the. return stroke, and so that during the feeding stroke the pile or bank 40 takes part in the movement of the tables, while it does not take art in such movement during the return stro e.

For the purpose of explaining the invention several examples embodying the same have been shown in the accompanying drawings,'in which the same reference characters pmade in sections 14, 15, 16, 1s gu1ded.

have been used in all the views to indicate corresponding parts, In said drawings- Fig. 1, is an elevation of the feeding apparatus,

Fig. 2, is a plan view of the feeding apparatus with the upper or supply table removed,

Fig. 3, is a sectional elevation taken on the line. 33 of Fig. 1, I a

Fig. 4, is a plan view of the upper table and the reversing member,

Fig. 5, is a diagrammatical view showing the means controlled by the sheet of paper being advanced for interrupting the rotary movement of the sheet feeding roller, I

Fig. 6, is a plan view showing a modification of the upper table,

Fig. 7, is apartial elevation showing the tables and the reversing member of another modification, 1

Fig. 8, is a top plan view of Fig. 7,

Fig. 9, is an elevation similar to the one shown in Fig. 7 and showing another modification,v

Fig. 10, is a top plan view of Fig. 9, and

Fig. 11, is a sectional elevation showing a reversing member of modified construction.

In the example shown in Figs. 1-5 my improved paper feeding apparatus is shown as used in connection with a rinting press, Fig. 1 showing only so muc of the said press as is necessary for illustrating the cooperation thereof with the paper feeding apparatus. The machine comprises a pair of frame members 1 having'an impression cylinder 2 mounted in suitable brackets 83. In front of the said cylinder atable 4 is mounted on the frame members, which provides a guide for the sheets of paper sup plied to the impression cylinder, said sheets being arrested in the roper position by the usual vertically mova le registering guides 5. For advancing the sheets of paper over the table 4 a rotary feed roller 102 and a roller 101 are provided, the roller 101 being mounted on arms 113 adapted to be rocke downwardly for pressing the sheets of paper into frictional contact with the roller. 102. The frame members 1 provide a support for a main or lower feed table made in several sections 11, 12, 13, and on frame portions 7 and 8 a supply table or upper feed table similar way the section12 consists of two transverse bars 21, and the sect-ion 13 consists of three longitudinal boards secured to transverse bars 22. The transverse bar 20 is secured to the frame members 1 so that the table section 11 cannot be shifted in longitudinal direction. At their front and rear ends the boards 11 are supported on rollers 23 provided on a transverse shaft 24 secured to the frame members 1 and on rollers 25 carried by a transverse shaft 26 mounted on.

arms 27 depending from the members 7.

The sections 12'and 13 of the table are likewise'supported on the rollers 23-and 25 but they are not secured to the frame 1, so that they are adapted to be reciprocated on the said rollers in longitudinal direction. As is shown in Fig. 4, the sections of the upper tabl are mounted on the frame members 7 and 8 in a similar way, the boards 14 being fixed to a transverse bar 33 secured to the frame members 8 and supported on rollers 29 and 30 carried by shafts 31 and 32 secured to the frame members 7 and 8 respectively. The boards 15 are fixed to transverse bars '34, and they are longitudinally shiftable on the rollers 29 and 30. The'boards 16 are the following mechanism is provided: On

transverse shafts 36 and 37 levers 38 and 39 are rockingly mounted, which are provided respectively with elongated slots 40, 41 and 42, 43, the slots 40 being engaged by pins 44 secured to a transver'sebar 6 fixed to the section 15 of the upper table, the slots 42 by pins 45 secured to the section 16 of the upper table, .the slot 41 by pins 46 provided on a transverse bar 6 secured to the section 12 of the lower table, and the slot 43 by pins 47 secured to the section '13 of the lower table. ,At their bottom ends the levers 38 and 39 located at one side of the machine are jointed to a link 48 connected at 49 tom. rod 50 adapted to be reciprocated in longitudinal direction. As shown the rod 50 is 'ointed to a toothed segment 51 having a roe ing support at 52. To a rock shaft 53 mounted in the frame members 8 arms 54 are secured which carry a rotary shaft 56 havingxfeed rollers 55, a pulley 9 and a pinion 57 eyed thereto. The feed rollers 55-are adapted for engagement with the sheets-of paper placed on the lower table 11, 12. 13 for advancing the same towards the table 4, rotary movement being imparted to the said rollers by suitable means such as a belt gearing ineluding the pulley 9. Normally the rollers 55 are out of-engagement with the paper,

. but they are adapted to be rocked into engagement therewith by suitable mechanism such for example as a cam 88 performing a complete rotation for each operation of the machine andacting on anarm 58 for rock-- ing the same with the rollers 55 into engagement with'the paper, a spring 89 tending to retract the roller. 55 away from the sheets of paper.

l/Vhen rocking the arms 54 downwardly the pinion 57 is thrown into engagement with the toothed segment 51 and the rollers 55 make contact with the sheets of paper. Therefore, when feeding a sheet of paper towards the impression cylinder 2 the toothed segment 51 and the levers 38, 39 connected therewith are moved for shifting the tables 15, 16 and 12, 13, as will be described hereinafter. By means of the mechanism so far described only advancing movement is imparted to the tables, the return movement being imparted thereto by mechanism now to be described.

In suitable bearings of the frame members 1 a shaft 60 is mounted which is adapted to be rotated in the direction of the arrow on from the main driving shaft of the machine, said shaft being once rotated for each operation of the machine. cams 61 and 62 are'keyed which are adapted to impart rocking movement to levers 63 and g 64 secured to shafts 65 and 66. The said levers are adapted to engage lugs 67 and 68 respectively secured to the sections 13 and 12 of the lower table. The cams 61 and 62 are displaced with relation to each other, and when rotating the shaft 60 the levers 63 and 64 are successively engaged by their respec-. tive cams, the lever 63 being first engaged by the cam 61 and thereafter the lever 64 by the cam 62, so that at first the table section 13 having the lug 67secured thereto and thereafter the table section 12 having the lug 68 secured thereto is returned into initial positlon, such movement being transmitted through the levers 38 and 39 to the upper table sections 15, 16. Topermit such successive movement of the table sections the lever 38 engages in a slot 69 of the link 48, so that at first the lever 39 and thereafter the lever 38 is rocked.-

Themember on which the pile-of sheets is reversed and carried from the upper table ber is made in sections 17 18, 19 corresponding in position to the boards 14, 15, 16 and connected therewith by'links 76. Therefore the sections 17 are stationary, while the sections 18 and 19 are rocked by the boards 12 and 13 connected therewith. As appears from,Figs. 1 and 2 the sections 17 to 19 may be segmental in form. Arms 77 of the bracket'7 carry curved arms 78 adapted to embrace the pile or bank of paper moving around the drums 17, I8, 19 and holding the same in position on the said drums.

The rock-ing movement of the rollers 55 by means of the cam 88 and the rotary movement of the-cams61 and 62 are derivedin a positive way from the main driving shaft and they are performed in regular succession. The rotary movement of the rollers I gearing 121 is rotatable on a driving shaft 105, and it is-provide'd with a conical coupling member 104. The coupling member 107 cooperating with the member 104 is nonrotatably mounted on the shaft 105 and it can be, slightly shifted by a spring 112 outofcoupling engagement with the member 104. It is in the form of an electromagnet the coil 108 of which is electrically connect ed with a pair of collector rings 109 secured to and insulated from the shaft 105. At the left of the rollers 101 and 102 a pair of contact arms or feelers 110 is provided, which are in position for being separated by the sheet of paper advanced through the rollers 101 and 102. The said contact .arms are electrically connected withbrushes 111 making contact with the rings 109, and the electric circuit includes a battery 123. While the feelers 110 make contact with each other the coil 108 is energized for attracting the coupling member 104 and coupling the pulley 106 to the shaft 105, and when the circuit is I interrupted the spring 112 disconnects the coupling members 104 and 108.

The operation of the feeding apparatus is as follows: I

In the position of the parts shown in Fig. 1 the rollers55 and the pinion 56 have been rocked by the cam 88 away from the bank of sheets and the toothed segment 51 respectively, and the arms 63 and 64 have shifted the table sections operated thereby to the right. Upon further movement of the. main driving shaft of the machine the cam 62 moving in the direction of the arrow :1: re-

leases the arm 64, and thereafter the cam 88 rocks the lever 58 with the rollers 55 into engagement with the uppermost sheet of paper, and it retracts the roller 101 away from the roller 102 my means of a rod 114. The electric circuit including the electromagnet 101 being closed the pulley 106 is coupled with the shaft 105. Therefore the rollers 55 are rotated and advance the uppermost sheet of paper towards the left and into"position between the rollers 101 and 102 and the contact arms 110. By the sheet of paper passing between the feelers 110 the electrical circuit is interrupted and the electromagnet 108 deenergized, so thatthe pulley 106 is disconnected from the shaft 105. Thereafter the cam 88 permits the arm 58 to' be rocked downwardly by the spring 89 connected to the arm 54, so that the rollers 55 are retracted away from the sheet of paper,'and the roller 101 is rocked downwardly and into engagement with the roller 102, whereupon.

the sheet of paper is further advanced by the rollers 101 and 102.

When rocking the arm 54 downwardly in the manner described the pinion 57 is thrown into mesh with the toothed segment 51, which segment is rocked to the left by the rotary movement of the shaft 56 imparted thereto by the belt gearing 121. Therefore the levers 38 and 39 are pulled with their bottom ends to the left so as to impart feeding movement to' the lower and upper table sections 12, 13 and 15, 16 connected therewith, the extent of the said movement depending on the time required for the rollers.

55 to feed the uppermost sheet of paper into position between the feelersfllO. Further,

the sections 18 and 19 are rocked in c1ock-.

wise direction. Thusthe pile of paper is advanced towards the impression cylinder 2 and with its uppermost sheet into position for engagement by the wheels 55. After the arms 54 have been rocked upwardly the cani 61 gets into engagement with the lever 63. Therefore the boards 13 and 16 are returned into initial positions, the boards 12'and 15 being for the present at rest. Thus the pile of sheets is held in position by friction on the stationary boards 11, 14 and the boards v12,

15. After the cam 61 hasreleased the leversupplied by the gravity of the pile moving on said inclined boards downwardly and by the friction of the pile of paper on the boards 12, 13 and 15, 16, while upon the return stroke of the boards the gravity and the friction of the said pile on one set of boards 12, 15 or 13, 16 counteract the return movement of the pile, so that the power for advancing the pile of paper is larger during the feeding stroke than during the return stroke.

In the example so far described the friction on the stationary boards 11 and] 14 counteracts the return movement of the pile of paper. However these stationary boards also counteract the forward stroke of the pile. In some cases it will be advisable to provide only movable boards and to return the groups of the said boards in succession. Fig. 6 shows a modification in -which all the boards of the upperand lower tables are movable. The upper table shown 7 in the said figure consists of two sets ofv lar to that of the upper table.

pair of transverse bars 134 and the boards .116. being secured to transverse bars 135.

The construction of the lower table is simi- The said upper boards are connected by links 176 .with sectional drums 118and 119. 1 The sets of boards are successively returned into initial position by means. similar to those shown in Figs. 1 to 4, Fig. 6 showing only the lateral plus 144, 145.

I have found that the same result may be obtained by constructing the upper and lower'tables each in one section performing the advancing and the return stroke, in which case however I incline the said tables at a larger angle, so that the gravity assisting the advancing movement and counteracting the return movement is suflicient to cause the forward movement of the bank of paper and to prevent return movement thereof when the tables move into. initial position. In Figs. 7 and 8 I have shown this modification in a diagrammatical wa the figures showin only the integral tab es 80 and 81, one roc 'ng lever 82 mounted at 82' and actuated by a link 84 for advancing the tables 80 and 81, and anintegral drum' 85 connected with the upper table 81 by one or more links 86. Since the tables 80 and 81 are returned by one stroke no special returning mechanism is re uired, the return movement being brought a out by the lever 82 or the link 84. To show what may be done a spring 87 is attachedto the lever 82 which tends to rock the said lever in opposition to the link 84.

In Figs. 9 to 11 I have shown a modification in which the tables are subdivided transversely of the direction of their reciprocating movement. Otherwise the con rod 250 with o crating mechanism such as has been descri ed with reference to Fig. 1, and the lever 239 and the link 248 are in pin and slot engagement with each other. The return movement of the boards 212, 215 and 213, 216 is brought about in the manner described with reference to Fig. 1, and I have shown in Figs. 8 and 9 only lugs 267 and 268 and parts of the levers ;263 and 264. The drum for reversing the bank of paper is moved only in the direction for advancing the bank of paper, while it is at rest when the tables or table sections perform their return stroke. As shown the.

drum is made in sections90 and 91, the secbearings of the machine frame. The sections. 91 are rotatably mounted on the tubular shaft 92, an they are fixed in position by arms 94 secur d to a transverse rod 95 mounted on the frame. On the shaft 93 an arm 96 is rockingly mounted'which carries a pawl 97 engaging in a ratchet wheel 98 keyed to the shaft 92. The arm 96 is. connected by a link 99 with one of the boards of the upper table. The pitch of the ratchet teeth formed on the disk 98 is very small, so that a small stroke of the table is suflicient to impart feeding movement to the ratchet disk 98 and the drum sections 90. Upon the forward movement of the tables corresponding feeding movement is imparted to the drum sections. 90, while no movement is imparted thereto upon the return stroke of the tables.

ence has'been made toparticular examples embodying the same I wish it to be understood that my invention is not limited to the constructions shown in the drawings, and that various changes may be made in the general arrangement of the apparatus and the construction of its parts without departin from the invention.

or example, I do not limit myself to a construction, in which the table supporting the bank of sheets comprises only two sections successively performing their return strokes. nor to a construction, in which the said table sections are returned into initial positions each time after they have been moved in forward direction for advancing the bank of sheets.

I claim:

1. An apparatus for feeding banks of sheets of paper, comprising a pair of bank supporting tables located one above the other and inclined downwardly and in opposite directions, a reversing member disposed between said tables at one of the ends thereof, and means to impart feeding andreturn movement to said tables in opposite directions.-

2. An apparatus for feeding banks of sheets of paper, 'comprisinga pair of bank supporting tables located one abovethe other and inclined downwardly and in opposite directions, a reversing member disposed between said tables at one'of the ends thereof, means to impart feeding and return movement to said tables in opposite directions, and means to impart feeding movement to said reversing member,

3. An apparatus for feeding banks of sheets of paper, comprising a pair ofbank supporting tables located one above the other and inclined downwardly and in opposite directions, subsidiary stationary bank supporting members disposed with their to faces within the planes of the top faces 0 said tables, a reversing member disposed between said tables at one of the ends thereof, and means to impart feeding and return movement to said tables in opposite directions.

4. An apparatus for feeding banks. of sheets of paper, comprising a pair of bank supporting tables located one above the other and inclined downwardly and in 0pposite directions, subsidiary stationary bank supportng members disposed with their top faces within the planes of the top faces of said tables, a reversing member disposed between said tables at one of the ends thereof, means to impart feedingand return movement to said tables in opposite directions, means to impart feeding movement to said reversing member, and a stationary reversin member corresponding in form and posit-ion to said movable reversing member.

5. An apparatus for feeding banks of sheets of paper, comprising a pair of bank supporting tables located one above the other an made in sections, a reversing member disposed between said tables at one of the ends thereof, means to impart feeding movement to said tables, and means for successively returning the sections of the tables into initial positions.

6. An apparatus for feeding banks of sheets of paper, comprising a pair of bank supporting tables located one above the other and made in sections, a reversing member disposed between said tables at one of the ends thereof, means to impart feeding movement to said tables, means for successively' returning the sections of the tables into initial positions, and subsidiary stationary bank supporting member's disposed with their top faces within the planes of said tables.

In testimony whereof I hereunto aflix my signature.

MAX GilNTHl-Ili WILHELM KOENIG. 

